Apparatus for supplying oil to boilers



(No maal.;

Wl R PARK.

APPARATUS'POR sUPPLING oIL'To BOILERS.

y vPatented.AugI 10,1897.

l WITNEEEEE- NVENT Dry UNITED A STATES PATENT GFFICE,

WILLIAM R. PARK, or TAUNTON, MASSACHUSETTS, ASSICNOR To THE HANCOCK INsPIRATOR COMPANY, OF BOSTON, MASSACHUSETTS.

APPARATUS FOR SUPPLYING OIL TO BOILERS.

SPECIFICATION forming part of Letters Patent No. 587,854, dated August IO, 1897.

Application nea April 16,1395.

Tall whom t may oon-cern:

Be it known that I, WILLIAM R. PARK, residing in Taunton, in the county of Bristol and State of Massachusetts, have invented'an g Improvement in Apparatus for Supplying Oil to Boilers,A of which the following description, in connection with the accompanying drawl ings, is a Speciiication, like letters and figures on the drawings representing like parts.

This invention relates to an apparatus for automatically controlling the supply of liquids and among other uses it is'particularly designed and adapted for controllin g the supply or admission of Oil to steam generators or boilers to avoid or .reduce to a minimum incrustation of the boiler-shell and to prevent priming.

In accordance with this invention the oil or rother liquid is supplied to the boiler from a receptacle'or chamber into which extends a pipe or duct leading to the boiler and which in practice may be the water-inlet or suction pipe of an' injector or other suitable suction apparatus, the said pipe being provided with a valve controlling the admission of Oil or I other liquid from the chamber into said pipe and which'is automatically governed by the quantity of liquid in the said receptacle, as by a iioat connected to the said valve. y

The pipe or ductreferred to constitutes the discharge or outlet pipe for the receptacle or chamber, and it is for the best results provided with a check-valve intermediate of the main valve and the boiler for a purpose as The liquid-receptacle may be provided with an inlet-pipe connected to a suitable source of supplyand provided with a valve, also connected to the oat to' be'automatically operated thereby, to control the adinissionof oil or other liquidinto the receptacle orchamber.

The apparatus when provided with an inletpipe `having'a valve automatically operated by the oat may be used to advantage with a battery of boilers or with a substantially large boiler or plant; but, if desired, the inlet-pipe for the oil-chamber with its valve connected to the float may be dispensed with when they apparatus-is used with a substantially small plant or boiler.

v The'outlet-pipe for the receptacle may and vprefembiy Win be provid-@dl with Serial No. 545,868. (No model.)

a suitable strainer, as will be described. i

In ord er to render the apparatus convenient of access without disturbing the operative parts, the casing or shell forming the receptacle or chamber may be detachably secured to a cap or cover which in practice is designed to be stationary-or practically permanently fixed to a suitable support, and the operative parts for the apparatusnamely, the outletpipe, its valve and fioat-are supported froml or bythe said cover', t-hus leaving the casing or shell of the receptacle or chamber free to be removed Without disturbing thesaid parts.

These and other features of this invention will be pointed out in the claims at the end of this speciiication.

Figure l represents in section and eleval tion, with partsbroken away, an apparatus embodying this invention; and Fig. 2 is a sectional detail of a modification to be referred to. Referring to Fig; l, A represents the casing of a' receptacle or chamber A to contain the'oil or other liquidpto .be supplied to the boiler or boilers. (Not herein shown.)

ThercasingA may and preferably Will be ofimetal, and it may be of any desired shape,

it being in the present instance represented Aas 'circular and provided at its upper end with an outside annular flange-ct, by which the said casing may be attached or secured to a cap or cover a', as by bolts, or it may be secured in any other desired or suitable manner.

The cover or cap a may be provided with a lug or ear a2, having an opening as, by means of which the said cover or cap may be secured to a suitable support (not shown) to render the said cover practically stationary with relation to the removable casing A.

The .receptacle or chamber A contains Within it an outlet-pipe, preferably made in sections, as herein shown, it consisting of a substantially vertical section a, a valve-casing a5 connected thereto, a substantially horizontal section a, and an elbow or coupling a7 connecting the section a with the valve-casing a5. A

The sectional outlet-pipe is preferably supported by or from the cover or cap a', and in Athe present instance the upper end of the IOO Ale

vertical section a4 is screw-tln'eaded and engages screw-threads on the interior of a hollow boss or tubular projection a8, depending from the cover a', the latter being provided with an opening extended through it in line with the hollow boss a, into which projects the end of apeoupling or elbow a9, having its other end, as herein shown, connected to a valvecasing al, )rovided with a suitable valve having the valve-stein cl2, by which communication between the chamber A' and the pump or injector which supplies the boiler (not shown) may be positively controlled when desired.

The horizontal section a6 of the liquid-outlet pipe, as herein shown, is provided with a cross-partition am, dividing the said pipe-section into an inlet-passage 2 and an outlet-passage 3, adapted to be connected by an opening or port Ll in the partition al, the walls of the said opening forming a seat for a valve l), provided with a stein or rod b', extended through a sleeve b2, screwed or otherwise secured to the pipe-section a".

The valve I) controls the passage ot the oil or other liquid from the receptacle or chamber A' through the port or opening 4 into the outlet-pipe, and the said valve is automatically governed by means of a float, herein represented as a hollow ball b3, which is operatively connected to the valve-stem l), and in practice this connection may be effected by soldering the said ball to the said valve-stein.

Frein the above description it will be understood that when the oil or other liquid in the chamber or receptacle reaches a predetermined level the float b3 will rise and lift the valve l) from its seat, thereby uncovering the port or opening t and permitting the oil or otherliquid in the chamber to pass through the said port or opening into the passage 3 of the outlet-pipe, from which it is drawn or sucked up through the coupling a7, the valvecasing a, and the pipe a", thence passing through the coupling a and valve-casin g al" to the suction apparatus and from thence to the boiler.

The valve-easing a5 is provided with a valve b5, having a stem or rod h6 movable in a suitable opening in a cross-bar 197 and in a suitable hole in a coupling sleeve or nut DS, connecting the valve-casing a5 to the pipe-coup- Y ling ai, the said stein or rod extending from opposite sides of the valve lf.

The valve U constitutes a check-valve which is normally seated and is lifted from its seat by the suction applied tothe liquidoutlet pipe, but which is again seated in the construction herein shown either by gravity or by back pressure from the boiler to cut ott the liquid-chamber from the boiler irrespective of the position of the valve b.

The liquid chamber or receptacle A' maybe connected with a substantially large plantas, for instance, a battery of boilers--and when so used I prefer that a substantially continuous supply of oil or other liquid to the chamber or receptacle A' should be maintained and to automatically regulate this supply. This result may be accomplished after the manner shown in Fig. 1, wherein the float b3 is represented as having secured to it, at a point substantially diametrically opposite the junction ot the float with the valve-stein l1', a valve stein or rod c, extended through a sleeve c' and into a valve-casing c'-, the said rod or stem within the said easing being provided with a valve c3, which cooperates with a port or opening c4 in a partition-wall c5, dividing the said valve-casing into an inletpassage 5 and an outlet-passage 6, with which latter communicates, as herein shown, a short section of pipe c7.

The valve-casing c2, as herein shown, has connected to it an elbow or pipe coupling c, provided, as herein shown, with a screwthreaded end c, which enters a hollow boss or projection c10 en the under side of the cover a', the said hollow boss communicating with an openingcl.2 in the cover, into which is extended the threaded end c13 of a feed-cup orv sight-tube c"L of any usual or suitable construction, the opposite end of which is ccnnected by' the pipe-couplin g c15 to a valve-casing el", provided with a valve having a valvestem c, the said valve-casing being connected by pipe C18 to a suitable oil or other liquid supply. (Not shown.)

rlhe sight-tube c14 may be provided with a glass cover c19 after the usual manner.

As represented in Fig. l, the valve ci is unseated and the port c4 is opened, so that oil or other liquid from the supply-pipe c1S may flow into the passage 5, through the port c, and thence by the passage G and pipe crr into the receptacle A', and when the oil within the receptacle has risen to a predetermined level the float b3 is lifted and the valve c3 is carried up to its seat and the port e"t closed, thereby cutting oft further inlet of liquid to the chainber or receptacle A.

When the valve c3 has been lifted so as to close the port or opening c4, the valve b at such tiinehas been lifted from its seat, so as to uncover the port or opening 4: in the outletpipe, thereby placing the apparatus in cendition to supply oil or other liquid to the boiler when suction is applied to the liquid-outlet pipe, as above described.

NVhen the suction is applied to the liquidoutlet pipe, the volume et' oil orotherliquid in the receptacle A' is diminished and the float h falls, thereby opening the port or opening c4 in the inlet-pipe and permitting an additional supply of oil or other liquid to flow into the receptacle or chamber A', so that the amount of liquid in the chamber or receptacle A' remains substantially at a constant level while the apparatus is in operation.

The flow of oil or other liquid into the receptacle or chamber A' may be positively regulated by means of the valve in the casing ci, and the tlow of oil out from the chamber or receptacle may be also positively regn- IOD IIO

lated by the valve in the casing ctw in the outlet-pipe. f The cap or cover a for the apparatus may be provided with a perforation or small opening d for the admission of air into the chamber or receptacle A.

In some instances it may be deemed sufficient to iill the chamber or receptacle A intermittently and by hand rather than continuously, as shown in Fig. 1, and in this case the liquid-inlet pipe, the valve-casing c2, and the valve c4 may be entirely omitted, and the opening C12 in the cover a may be closed by a small cap d', iitted over a short pipe-section d2, inserted into the opening cl2, the said opening c12 being provided with a strainer-plate d4, and the cap d being provided with a perforation or opening d5.

Thevoil-outlet pipe for the apparatus may and preferably will be provided with strainer, represented in Fig. 1 as a perforated ydrum d6 attached to the inlet end of the valve-casing a6.

The apparatus shown in Fig.` l may also be advantageously used in connection with an injector, where the water-supply is taken from a street or other main in which the Water is under pressure.

It will be seen that VAthe valve b is closed when the volume of liquid in the casing A falls below a predetermined level,v and in practice the valve b is closed beforethe liquid in the casing A has fallen sutciently to uncover the mouth of the outlet-pipe, so that there is present in the casing a volume of liquid which forms a liquid seal for the mouth of the outlet-pipe and thereby avoids any danger of air being drawn into the outletpipe'by the injector, as would be the case if the valve b was reversely seated and opened bythe descent of the float. This construction of apparatus insures perfect Working of the oil-supplying apparatus Without interfering with the working of the injector, or of the pump, if one is used, and in the case of the latter prevents it from becoming airlocked.

ing instrumentalities, viz: a casing provided With a cover having means by Whichsaid cover may be rendered fixed or stationary and provided with a liquid-inlet for the casing, means` to detachably secure the casing to its cover, an outlet-pipe for the casing extended down through the said cover into the said casing and provided with a substantially horizontal extension locatedbelow the desired level of the liquid and provided with a valve, and means within the casing responsive to the variation in the level of the liquid in the'casing and operatively connected to said valve to open the same when the volume of liquid in thecasing reaches a predetermined amount and to close the same when the volume of liquid diminishes to a predetermined amount, and a check-valve in said outlet intermediate of said valve and cover, the casing being detachable from its cover without disturbing the pipe connections attached to the cover, for-the purpose speciied.

2. In a liquid-supply apparatus, the following instrumentalit-ies, viz; a casing to contain the liquid, a cover for said casing having means by which said cover may be rendered stationary, means to detachably secure said casing to its cover, an inlet-pipe for the casing extended through the said cover and supported thereby, an outlet-pipe for said casing.

extended through said cover and supported thereby, a valve in the inlet-pipe Within the casing, a valve in said outlet-pipe within the casing, a float within the casing responsive e to variation in the level of the liquid and operatively connected to said valves to close the valve in the outlet-pipe and open the valve in the inlet-pipe, when the volume of y liquid in the casing diminishes to a predetermined amount, the said casing being removable from its cover without disturbing the operative parts and pipe connections, substantially as and for the purpose specified.

3. In a liquid-supply apparatus, the following instrumentalities, viz: a casin g to contain the liquid, a cover for said casing having means by which said cover may be rendered stationary, means to detachably secure said casing to its cover, an inlet-pipe for the casing extended through the said cover and supf ported thereby, an outlet-pipe for said casing extended through said cover and supported thereby, a valve in the inlet-pipe Within the casing', a valve in said outlet-pipe within the casing, a iioat within the casing responsive to variation in the level of the liquid and operatively connected to said valves to close the valve ,in the outlet-pipe and open the valve in the inlet-pipe, when the volume of IOO IIO

liquid in the casing diminishes to a predetermined amount, a check-valve in said outletpipe intermediate of the outlet-valvel therein and the said cover, the said casing being removable from its cover Without disturbing the operative Aparts and pipe connections, substantially as and for the purpose specified.

In testimony whereof I have signed my" 

